Manganese Sand Ore Is an Economical and Effective Catalyst for Ozonation of Organic Contaminants in Petrochemical Wastewater

Manganese Sand Ore Is an Economical and Effective Catalyst for Ozonation of Organic Contaminants in Petrochemical Wastewater

Type	Journal Article
Author	Chunmao Chen
Author	Brandon A. Yoza
URL	http://link.springer.com/article/10.1007/s11270-015-2446-y
Volume	226
Issue	6
Pages	1-11
Publication	Water, Air, & Soil Pollution
Date	2015/05/14
Abstract	Catalytic ozonation process (COP) is a promising advanced oxidation process for petrochemical wastewater (PCW) treatment. However, the lack of economical and effective catalysts limits its application. Researchers used manganese sand ore (MSO) as a heterogeneous catalyst for ozonation of organic contaminants in PCW. The calcined MSO-assisted COP (cMSO-COP) of aniline exhibited greater degradation than natural MSO-assisted COP or single ozonation process (SOP). The cMSO significantly promoted hydroxyl radical-mediated oxidation, decreased the ozonation activation energy by about 20 %, and doubled the reaction rates in comparison with SOP. The cMSO-COP increased the chemical oxygen demand (COD) removal of PCW twofold relative to SOP. The number of polar organic contaminants decreased by 50 % after cMSO-COP treatment. Study results showed the potential use of cMSO for efficient ozonation of petrochemical-derived contaminants at low cost.